Restructure memos to make them alphabetically sortable

ynab.py

@@ -5,6 +5,7 @@ import csv
 import re
 from pathlib import Path
 
+whitelist_cards = ["7756"]
 
 def usage():
     print('Usage: ynab.py <filename>')
@@ -13,6 +14,44 @@ def usage():
 def is_reserved(row):
     return '(Reservert)' in row[1]
 
+def convert_memo(original):
+    original = re.match(r'="[ ]?(.+)"', original).groups()[0]
+    original = original.replace(" Kurs: 1.0000", "")
+    words = original.split(" ")
+
+    for i in range(20):
+        if words[0] == "":
+            # It's empty
+            del words[0]
+        elif m := re.match(r'\*(\d{4})', words[0]):
+            # It's the last four digits of a card
+            if m.groups()[0] in whitelist_cards:
+                # It's an expected card, ignore it
+                del words[0]
+            else:
+                # It's an unexpected card, move it to the end
+                words.append(words.pop(0))
+        elif m := re.match(r'\d{2}\.\d{2}', words[0]):
+            # It's the date. Move it to the end
+            words.append(words.pop(0))
+        elif (m1 := re.match(r'^[A-Z]{3}$', words[0])) and (m2 := re.match(r'[\d]+\.[\d]+', words[1])):
+            # It's the original currency
+            if words[0] == "NOK":
+                # It's Norwegian kroner, ignoring
+                del words[0]
+                del words[0]
+            else:
+                # It's some other currency, move it to the end
+                words.append(words.pop(0))
+                words.append(words.pop(0))
+        else:
+            break
+    else:
+        raise Exception(f"Infinite loop while parsing \"{original}\"")
+
+
+    return " ".join(words)
+
 
 def convert(reader, writer):
     header = ['Date', 'Payee', 'Memo', 'Outflow', 'Inflow']
@@ -45,7 +84,7 @@ def convert(reader, writer):
         else:
             money_out = -money
 
-        memo = re.match(r'="[ ]?(.+)"', row[2]).groups()[0]
+        memo = convert_memo(row[2])
 
         new_row = [*row[:2], memo, money_out, money_in]
         writer.writerow(new_row)